1
Stephen C Jacobsen, Robert L Stephen, Peter Hansen: Bi-directional flow catheter with retractable trocar/valve structure. Motion Control Incorporated, Criddle Thorpe & Western, December 25, 1979: US04180068 (190 worldwide citation)

A bi-directional flow catheter for insertion into the body of a patient for the simultaneous introduction into and withdrawal therefrom of fluid. The catheter includes a primary tube having open distal and proximal ends, and a pair of branching tubes, each of which branch from a different side of th ...


2
W Peter Hansen, Robert A Hoffman: Method and apparatus for automated identification and enumeration of specified blood cell subclasses. Ortho Diagnostics, Audley A Ciamporcero Jr, August 18, 1981: US04284412 (152 worldwide citation)

Specified subclasses of blood cells, such as of lymphocytes, are automatically identified based on utilization of antigenic determinants on the cell surface, their reactivity with antibodies which fluoresce under known circumstances, and utilization of principles of flow cytometry. A blood sample is ...


3
Laban Phelps Jackson, Alexis S Pecoraro, Peter Hansen, Martin L Bauer, H Lee Martin: Method and apparatus for the interactive display of any portion of a spherical image. Interactive Pictures Corporation, Banner & Witcoff, November 23, 1999: US05990941 (94 worldwide citation)

Apparatus for interactive display of any portion of a spherical image preferably comprises a personal computer or other digital processor apparatus for storing digital data representative of at least one image having a 180 degree or greater field of view (or hemispherical image). In order to view a ...


4
Dragan Danilo Nebrigic, Milan Marcel Jevtitch, Vladimir Gartstein, William Thomas Milam, James Vig Sherrill, Nicholas Busko, Peter Hansen: Multiple output dynamically regulated charge pump power converter. The Board of Trustees of the University of Illinois, Welsh & Katz, November 4, 2003: US06643151 (93 worldwide citation)

A charge pump power converter efficiently provides electrical power by dynamically controlling a switch matrix of the charge pump. Instead of open-loop oscillator-based control, a dynamic controller provides power upon demand by sensing the output voltage and changing the operating frequency of the ...


5
W Peter Hansen, Petra B Krauledat: Homogeneous binding assay. Graham & James, August 17, 1999: US05939021 (92 worldwide citation)

A homogeneous method of measuring chemical binding relies on resonant, or "amplified," optical extinction (light scattering plus absorption) from a defined, specific class of colloidal particles wherein the real term n of the complex refractive index n-ik approaches zero while the imaginary term k a ...


6
Aimee B Angel, Ian W Hunter, Peter Hansen: Transdermal transport device with suction. Massachusetts Institute of Technology, Hamilton Brook Smith & Reynolds P C, June 27, 2006: US07066922 (80 worldwide citation)

A transdermal transport device includes a reservoir for holding a formulation of an active principle, and one or more needles. Each needle has a bore through which the formulation is transported between the reservoir and a biological body, and has an end portion that is substantially aligned in a pl ...


7
Igino Lombardo, Donald E Barry, W Peter Hansen: Method for detecting and controlling flow rates of the droplet forming stream of an electrostatic particle sorting apparatus. Ortho Diagnostics, Audley A Ciamporcero, April 20, 1982: US04325483 (72 worldwide citation)

A novel method is disclosed for detecting and controlling the flow rate of a perturbed, droplet-forming stream in an electrostatic particle sorting apparatus. Detection apparatus is located at two points along the stream, at a first particle sensing point for sensing the presence of particles within ...


8
Russell J Gershman, W Peter Hansen, Alan M Hochberg, J Garland O Connell: Automated detection of platelets and reticulocytes in whole blood. Ortho Diagnostic Systems, Audley A Ciamporcero Jr, April 20, 1982: US04325706 (68 worldwide citation)

A sample of whole blood is stained with an acridine orange reagent, and is analyzed rapidly, a cell at a time, in a flow cytometry system having a sample stream dimension in the range of expected red cell dimensions. Red florescence and forward scatter data is utilized first to discriminate a cell f ...


9
Igino Lombardo, W Peter Hansen: Method and apparatus for positioning the point of droplet formation in the jetting fluid of an electrostatic sorting device. Ortho Diagnostics, Audley A Ciamporcero Jr, March 9, 1982: US04318480 (63 worldwide citation)

A novel method for positioning the point of droplet formation in the jetting fluid of an electrostatic sorting device is disclosed. The formation of the uniform droplets is carried out via the application of vibrational energy inparted by a transducer to a jetting laminar flow stream. Previously sen ...


10
Dragan Danilo Nebrigic, Milan Marcel Jevtitch, Vladimir Gartstein, William Thomas Milam, James Vig Sherrill, Nicholas Busko, Peter Hansen: Dynamically-controlled, intrinsically regulated charge pump power converter. The Procter & Gamble Company, Peter D Meyer, October 30, 2001: US06310789 (57 worldwide citation)

A charge pump power converter efficiently provides electrical power by dynamically controlling a switch matrix of the charge pump. Instead of open-loop oscillator-based control, a dynamic controller provides power upon demand by sensing the output voltage and changing the operating frequency of the ...